Related Experiment Video
Updated: Dec 24, 2025

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome ARDS
Published on: April 7, 2021
Late Administration of Surfactant May Increase the Risk of Patent Ductus Arteriosus
Fuat Emre Canpolat1, Gülsüm Kadıoğlu Şimşek1, James Webbe2
1NICU, Department of Neonatology, Ankara City Hospital, University of Health Sciences, Ankara, Turkey.
Insights
Late surfactant administration in preterm infants increases the risk of developing patent ductus arteriosus (PDA). Early surfactant delivery is crucial for better neonatal outcomes.
Area of Science:
- Neonatal Medicine
- Pediatric Cardiology
- Respiratory Medicine
Background:
- Surfactant therapy is vital for preterm infants.
- Early surfactant administration is most effective but not always achieved.
- Delayed surfactant may be linked to neonatal complications.
Purpose of the Study:
- To investigate the association between surfactant administration timing and patent ductus arteriosus (PDA).
- To explore the relationship between delayed surfactant and other neonatal morbidities.
Main Methods:
- Retrospective analysis of 819 preterm infants (<30 weeks gestational age, <1500g).
- Infants categorized into early (<2h) and late (>2h) surfactant groups.
- Statistical analysis including multinominal logistic regression.
Main Results:
- PDA detected in 48% of early group vs. 74% of late group (p=0.001).
- Late surfactant administration (OR 3.5, 95% CI 2.2-5.64) significantly increased PDA risk (p=0.001).
Conclusions:
- Late surfactant administration is associated with a significantly higher risk of developing PDA.
- Optimizing surfactant timing is critical in neonatal care for preterm infants.
Abstract:
Introduction: Early rescue surfactant is the most effective way of administering surfactant but many infants still receive surfactant later. Our aim was to explore the association between timing of surfactant administration and the development of patent ductus arteriosus and other neonatal morbidities. Materials and method: This retrospective study analyzed 819 preterm infants under 30 weeks of gestational age and under 1,500 g. Results: Five hundred and ninety three infants received surfactant during the study period, of these 365 received it within 2 h of life (early group) and 228 received it after two h (late group). Patent ductus arteriosus was detected in 175 (48%) of the early group and 168 (74%) of the late group, p = 0.001. Multinominal logistic regression analysis demonstrated that receiving surfactant after 2 h of life has a OR 3.5 (2.2-5.64 95 % CI) and a p-value of 0.001 for developing patent ductus arteriosus. Conclusion: In this study population we observed that late surfactant administration is associated with increased risk of patent ductus arteriosus.
Related Concept Videos
Breathing
Upper Respiratory Drugs: Antitussives, Expectorants, and Mucolytics
Antitussives include codeine, dextromethorphan (Robitussin), and benzonatate (Tessalon). Codeine and dextromethorphan exert their effects centrally by suppressing the cough reflex center in the medulla. Benzonatate operates peripherally within the respiratory tract by...
Pulmonary Cycle: Exhalation
Acute Respiratory Failure-III
Factors Affecting Pulmonary Ventilation
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Acute Respiratory Failure-V
Ensure that patients are monitored continuously for their response to therapy, including changes in...

